負荷応力下での磁気音響結合の周波数依存性

概要

論文の詳細を見る
Frequency dependence of magnetoacoustic interaction was experimentally investigated for JIS-SS400 low-carbon steel. Velocity of an elastic wave which propagates in a ferromagnetic material slightly varies when an external magnetic field is applied. This is called the magnetoacoustic interaction. This occurs because the elastic properties depend on the magnetic domain structure, which is affected by both the external magnetic field and the stress. Consequently, the magnetoacoustic interaction is dependent on the stress, and it can be applied to nondestructive stress measurements. In this study, the magnetically induced change in the longitudinal wave velocity is measured under various stress levels. The frequency dependence is explained qualitatively in terms of the domain wall motion and the rotational vibration of the domain magnetization. Effects of texture and annealing are also investigated. Discussion is presented on the applicability to the nondestructive residual stress measurement.
一般社団法人日本機械学会の論文
1994-03-25